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Schedule of Investments (Parenthetical) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Expiration date | 7-day | 7-day
Collateral Amount On Open Commodity Futures Contracts | $ 127,265,650 | $ 97,539,600
Money Market Funds [Member] | Cash Equivalents [Member] | Goldman Sachs Financial Square Government Fund Institutional Shares [Member] |  |
Investment Interest Rate | 0.03% |
Money Market Funds [Member] | Cash Equivalents [Member] | Morgan Stanley Institutional Liquidity Funds Government Portfolio Institutional Shares [Member] |  |
Investment Interest Rate | 0.03% |
Money Market Funds [Member] | Cash Equivalents [Member] | Fidelity Investments Money Market Funds Government Portfolio [Member] |  |
Investment Interest Rate |  | 0.01%
Money Market Funds [Member] | Cash Equivalents [Member] | RBC U.S. Government Money Market Fund - Institutional Share Class [Member] |  |
Investment Interest Rate | 0.03% | 0.02%

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